David Banks (born 24 September 1951) is a stage and television actor and occasional writer and producer. He is best known to Doctor Who fans for his portrayal of the Cyber-Leader in Earthshock, The Five Doctors, Attack of the Cybermen, and Silver Nemesis. Banks also played Karl in the stage production Doctor Who: The Ultimate Adventure. As Jon Pertwee's understudy in the production, he played the Doctor for two performances when Pertwee fell ill. He also wrote Iceberg, a novel in the Virgin New Adventures which featured the Cybermen. He wrote the part non-fiction, part speculative Doctor Who: Cybermen, the in-universe portions of which were adapted for audio (with Banks' narration) as The ArcHive Tapes. Banks also produced a series of audiocassette interviews with Doctor Who actors including The Ultimate Interview (with Colin Baker), Pertwee in Person (with Jon Pertwee), and Who's the Real McCoy? with Sylvester McCoy.